Algonquian (Any) 5
Armenians 22
Ashanti 23-3=20
Benin (Dahomey)/Benin (Nigeria) 15
Bohemians/Czechs/Great Moravia 14
Creek/Muskogee/Other SE NA 21
Georgians 15
Haida/Tlingit/Other PNW NA 15
Hebrews 22
Maori/Other Polynesians 22
Olmecs/Mixe-Zoque/Other Mesoamerican 3+1=4
Phoenicians 18
Swahili/Kilwa 23
Tamil/Chola/Sri Lankans 9
Tibetans 10
Vietnamese 14
Zimbabweans 12
I don't see how a side is obscure when everyone seems to know exactly who and what I'm talking about. Apart from their artstyle the religions of all major players in the area is Olmec inspired (most archeologists agree that they are the ones who started the whole "public ritual sacrifice to the rain/crop gods" thing that the Maya and Aztecs were so keen on. Whether or not that was a net positive is obviously questionable but the fact remains that it was a massively influentail part of many meso-American cultures and it's almost universally agreed that Olmec started it or at the VERY least were the ones that popularized it), their trade routes stretched for dozens upon dozens of miles even without pack animals in uneven terrain in an era when a consistent trade route of ten miles might as well have been a voyage to Mars, and even in the sources that argue they weren't the mother culture (which is debatable but for the sake of argument) they still concede that the Olmec WERE the first civilization in the area and the other cultures that rose up around the same time took far longer to build up and develop to the same level that the Olmec did. They are an amazing culture, we have more than enough to make a civ with, and they deserve better than what they're being given. AND if we completely and totally ignore the Olmec in favor of the other options here they too deserve more than constantly being snubbed in favor of "Meso-America has exactly two civilizations and no one else besides barbarians ever lived there". If you don't want to vote for the Olmec the other choices still don't warrant execution this early.
As for Ashanti I hold no malice for them, I just REALLY prefer Nigeria.